/*
 * The contents of this file are subject to the terms 
 * of the Common Development and Distribution License 
 * (the "License").  You may not use this file except 
 * in compliance with the License.
 * 
 * You can obtain a copy of the license at 
 * glassfish/bootstrap/legal/CDDLv1.0.txt or 
 * https://glassfish.dev.java.net/public/CDDLv1.0.html. 
 * See the License for the specific language governing 
 * permissions and limitations under the License.
 * 
 * When distributing Covered Code, include this CDDL 
 * HEADER in each file and include the License file at 
 * glassfish/bootstrap/legal/CDDLv1.0.txt.  If applicable, 
 * add the following below this CDDL HEADER, with the 
 * fields enclosed by brackets "[]" replaced with your 
 * own identifying information: Portions Copyright [yyyy] 
 * [name of copyright owner]
 */
// Copyright (c) 1998, 2007, Oracle. All rights reserved.  
package oracle.toplink.essentials.internal.identitymaps;

import java.util.*;

/**
 *    <p><b>Purpose</b>: Provides the capability to insert CacheKeys into a Linked List.
 *    <p><b>Responsibilities</b>:<ul>
 *    <li> Provide same cabailities as superclass.
 *    <li> Maintain within linked list.
 *    </ul>
 *    @see CacheIdentityMap
 *    @since TOPLink/Java 1.0
 */
public class LinkedCacheKey extends CacheKey {

    /** Handle on previos element in cache */
    protected LinkedCacheKey previous;

    /** Handle on next element in cache */
    protected LinkedCacheKey next;

    /**
     *    Initialize the newly allocated instance of this class.
     *    @param object is the domain object.
     *    @param writeLockValue is the write lock value number.
     */
    public LinkedCacheKey(Vector primaryKey, Object object, Object writeLockValue, long readTime) {
        super(primaryKey, object, writeLockValue, readTime);
    }

    public LinkedCacheKey getNext() {
        return next;
    }

    public LinkedCacheKey getPrevious() {
        return previous;
    }

    public void setNext(LinkedCacheKey next) {
        this.next = next;
    }

    public void setPrevious(LinkedCacheKey previous) {
        this.previous = previous;
    }
}
